Java MongoDB Inserting a Document to Database

> document=({"empId" : "10001","empName" :"Dinesh Rajput" ,"date_of_join" : "10/04/2010"
 ,"education" :"M.C.A." , "profession" : "DEVELOPER","interest" : "MUSIC","community_name"
 :["MODERN MUSIC", "CLASSICAL MUSIC","WESTERN MUSIC"],"community_moder_id" : ["MR. BBB","MR.
 JJJ","MR MMM"],"community_members" : [500,200,1500],"friends_id" : 
["MMM123","NNN123","OOO123"],"ban_friends_id" :["BAN123","BAN456","BAN789"]});

> db.employees.insert(document) 

BasicDBObject document = new BasicDBObject();
document.put("database", "dineshonjavaDB");
document.put("table", "employees");
 
BasicDBObject documentDetail = new BasicDBObject();
documentDetail.put("empId", "10001");
documentDetail.put("empName", "Dinesh");
documentDetail.put("salary", "70000");
 
document.put("detail", documentDetail);
 
collection.insert(document);

BasicDBObjectBuilder documentBuilder = BasicDBObjectBuilder.start()
  .add("database", "dineshonjavaDB")
  .add("table", "employees");
 
 BasicDBObjectBuilder documentBuilderDetail = BasicDBObjectBuilder.start()
 .add("empId", "10001")
 .add("empName", "Dinesh")
 .add("salary", "70000");
 
 documentBuilder.add("detail", documentBuilderDetail.get());
 
 collection.insert(documentBuilder.get());

• Create a new BasicDBObject and invoke its put() method to set the document attributes.
• Create a BasicDBObjectBuilder instance (that follows the builder design pattern) by invoking the static BasicDBObjectBuilder.start() method, calling the add() method to add attributes to the document, and then invoking get() to retrieve the resultant DBObject, which is the approach I took when building the employees document

Map<String, Object> documentMap = new HashMap<String, Object>();
documentMap.put("database", "dineshonjavaDB");
documentMap.put("table", "employees");
 
Map<String, Object> documentMapDetail = new HashMap<String, Object>();
documentMapDetail.put("empId", "10001");
documentMapDetail.put("empName", "Dinesh");
documentMapDetail.put("salary", "70000");

documentMap.put("detail", documentMapDetail);
 
collection.insert(new BasicDBObject(documentMap));

String json = "{'database' : 'dineshonjavaDB','table' : 'employees'," +
 "'detail' : {'empId' : 10001, 'empName' : 'Dinesh', 'salary' : 70000}}}";

DBObject dbObject = (DBObject)JSON.parse(json);
 
collection.insert(dbObject);

package com.dineshonjava.mongo.test;

import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Map;

import com.mongodb.BasicDBObject;
import com.mongodb.BasicDBObjectBuilder;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
import com.mongodb.util.JSON;

/**
 * @author Dinesh Rajput
 *
 */
public class InsertDocumentDemo {

 /**
  * @param args
  */
 public static void main(String[] args) {
 try {
  // connect to mongoDB, IP and port number
  Mongo mongo = new Mongo("localhost", 27017);
  // get database from MongoDB,
  // if database doesn't exists, mongoDB will create it automatically
  DB db = mongo.getDB("dineshonjavaDB");
   
  // get a single collection
  DBCollection collection = db.getCollection("employees");

  // BasicDBObject example
  System.out.println("BasicDBObject example...");
  BasicDBObject document = new BasicDBObject();
  document.put("database", "dineshonjavaDB");
  document.put("table", "employees");

  BasicDBObject documentDetail = new BasicDBObject();
  documentDetail.put("empId", "10001");
  documentDetail.put("empName", "Dinesh");
  documentDetail.put("salary", "70000");
  document.put("detail", documentDetail);

  collection.insert(document);

  DBCursor cursorDoc = collection.find();
  while (cursorDoc.hasNext()) {
  System.out.println(cursorDoc.next());
  }
 
  collection.remove(new BasicDBObject());

  // BasicDBObjectBuilder example
  System.out.println("BasicDBObjectBuilder example...");
 BasicDBObjectBuilder documentBuilder = BasicDBObjectBuilder.start()
   .add("database", "dineshonjavaDB")
                        .add("table", "employees");
 
BasicDBObjectBuilder documentBuilderDetail = BasicDBObjectBuilder.start()
                    .add("empId", "10001")
                    .add("empName", "Dinesh")
           .add("salary", "70000");
 
 documentBuilder.add("detail", documentBuilderDetail.get());
 
 collection.insert(documentBuilder.get());
 
 DBCursor cursorDocBuilder = collection.find();
 while (cursorDocBuilder.hasNext()) {
  System.out.println(cursorDocBuilder.next());
 }
 
 collection.remove(new BasicDBObject());
 
 // Map example
 System.out.println("Map example...");
 Map<String, Object> documentMap = new HashMap<String, Object>();
 documentMap.put("database", "dineshonjavaDB");
 documentMap.put("table", "employees");
 
 Map<String, Object> documentMapDetail = new HashMap<String, Object>();
 documentMapDetail.put("empId", "10001");
 documentMapDetail.put("empName", "Dinesh");
 documentMapDetail.put("salary", "70000");
 
 documentMap.put("detail", documentMapDetail);
 
 collection.insert(new BasicDBObject(documentMap));
 
 DBCursor cursorDocMap = collection.find();
 while (cursorDocMap.hasNext()) {
  System.out.println(cursorDocMap.next());
 }
 
 collection.remove(new BasicDBObject());
 
 // JSON parse example
 System.out.println("JSON parse example...");
 
 String json = "{'database' : 'dineshonjavaDB','table' : 'employees'," +
 "'detail' : {'empId' : 10001, 'empName' : 'Dinesh', 'salary' : '70000'}}}";
 
 DBObject dbObject = (DBObject)JSON.parse(json);
 
 collection.insert(dbObject);
 
 DBCursor cursorDocJSON = collection.find();
 while (cursorDocJSON.hasNext()) {
  System.out.println(cursorDocJSON.next());
 }
 
 //collection.remove(new BasicDBObject());
 
 System.out.println("Done");
 
} catch (UnknownHostException e) {
   e.printStackTrace();
} catch (MongoException e) {
   e.printStackTrace();
}
 
}

}